This simple starter works well as a quick revision activity. From a series of topics select two words which are peculiar to each one. Present all the words to the pupils in a random order, and ask them to spot the pairs.
A more sophisticated version of this activity can be created by selecting words where the pairs are not so obvious, or where each word could potentially be linked with several of the others on offer. Pupils are then challenged to explain the thinking behind the links that they pick out.